Department of Pharmacy, Pusan National University College of Pharmacy, Busan, Korea.
© Copyright 2014. Korean Association for the Study of Intestinal Diseases. All rights reserved.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Financial support: This work was supported by a 2-year research grant of Pusan National University.
Conflict of interest: None.